I have been using the deck card by card on default and the win rate is steady between 75% and 85% as I check it from time to time. It was 85% but fell a little as I removed the setting to stay on rank 18- and let it rank up. I got to rank 14 and the win rate is still over 75%.
Pretty great match up against other hunters(10-0) and priests(7-0), but the deck is really struggling against this secret paladin meta (2-5).
@luffyDmonkeyYou said it could work better on rush instead of default, but I disagree, got it on rush overnight once and it got a win rate of 67,9%, on default on one night had a win rate of 78,7%. The rush had a little bit more games played, but the total amount of wins were bigger on default because the games were not fast enough on rush to compensate for the 9,8% difference on win rate.
@PsyrodonKel would be great for a player using the deck, but the bot usually use small minions to go face rather than trading, it doesn't understand the Kel mechanics really well to make a good use of it. I think another legendary, more brute force, could be better. Ragnaros, Sneed, King Crush, Ysera, maybe even a Gruul... But Dr. Balanced is definitely the best, the value is just too amazing. Maybe the pair Feugen and Stalagg could work, replacing Boom and another one, but you would need both, it would be too situational, wouldn't help most part of the times, it's too easily countered by players and it would be necessary to remove something else, and I don't think there's anything removable in the deck. I would just suggest something like a King of Beasts.